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A car stuck on the border fence between the US and Mexico. Photo: AFP / US Customs and Border Protection
The US-Mexico border is the most frequently crossed border in the world and is almost 2,000 miles long.
美墨邊界是世界上人員過往最頻繁和一條，其長度幾乎達2000英里。
當什麼事情或人 drive you up the wall 的時候，就是說這件事情或人快把你給逼瘋了，讓你非常煩惱和生氣。
This computer is really driving me up the wall; it keeps crashing!
Shopping for jeans drives her up the wall. She can never find a pair that fit her.
You are driving me up the wall! Will you stop singing that awful song now?
另一個字面上很相似的短語是 climbing the walls, 此短語用來形容某人非常緊張，擔心或者是感到無聊。
I've been sitting at home waiting for the phone to ring all day - I'm climbing the walls.